The VGK-S reflects a new way of thinking about amputee healthcare – in particular, amputees with short transfemoral stumps. An estimated 30% of amputees have femoral bone length that is too short to handle the mass distribution of a standard prosthesis comfortably. The VGK-S represents a bespoke innovation for short transfemoral stumps that allows space for a functional prosthetic component. Some call it an upside down knee joint (which it isn't), but this idea reflects the revolutionary approach this knee takes and the fact that there isn't anything else like it. This knee effectively replaces the quadriceps that are lost during amputation.